Transmission-gear for self-propelled vehicles.



N0. BMILEZZ. Patented Ian. 2, I900. W. BAINES.

TRANSMISSION GEAR FUR SELF PROPELLED VEHICLES.

Applicntion filed Sept.'18. 1899.)

3 Sheets-Sheet (No Model.)

N0. MILEZZ Patented lan. 2, I900. W. BAINES.

TRANSMISSION GEAR FOR SELF PROPELLED VEHICLES.

(Application filed Sept. 18, 1899.

3 Sheets-Sheet 2.

(No Model.)

m: mmm PETERS co, Mom-Una).v wAsmNGTON a c No. 640.1522. Patented Jan.2, I900. W. BAINES.

TRANSMISSION GEAR FUR SELF PROPELLEU VEHICLES.

{Application filed Sept. 18, 1899.) (No Model.) 3 Sheeis-Sheet 3.

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dramas a'rnrrr llrrrca lVlLLIAIlI BAINES, OF LONDON, ENGLAND.

TI-ll-lblf'illll llElSlON GEAR FUR SELF PHOPELLED VEHICLES.

EPECIFICA'IIUN forming part of Letters Patent No. 640,522, dated January2, 1900.

Application filed September 18,1899. Serial No. 730,889. (No model.)

To (all w/to'nt 711mg concern:

Be it known that 1, WILLIAM Barnes, a subject of the Queen of England,residing at London, England, have invented certain new and usefulImprovements in or Relating to Transmission-Gear for Self-PropelledVehicles, (for which I have made application for Letters Patent in GreatBritain under N 0. 18,962, dated September 5, 1898,) of which thefollowing is a specification.

This invention relates to the transmission of the power ofselfipropelled vehicles. This is easily effected by belts or toothedgearing; but in carrying out my invention I employ a rope or cablerunning in or upon suitable pulleys or drums preferably grooved for thepurpose. This is particularly useful where I have the fly-wheel rotatingin a horizontal plane, as the rope accommodates itself readily to thechange of direction of motion from the fly-wheel or engine-shaft to thatof the road-wheels of the vehicle, the pulleys employed for effectingthis change of motion being applicable also as jockey-pulleys to secureor preventthenecessary tightness of the rope, according as it is desiredto drive or to slip. If the fly-wheel be not placed upon theengine-shaft, but merely connected therewith, the rope may be used asthe means of transmission of power from the engine-shaft to thefly-wheel or to its shaft or boss and either directly or indirectly fromthere to the counter-shaft or road-wheels. The ropes may be boxed in, ifdesired; but as they are not so easily affected by exposure to theweather or dirt this is not of such importance as in the case of beltsor toothed gears.

In the accompanying drawings, Figure 1 is a plan, Fig. 2 a side view,and Fig. 3 an end view, showinga convenientmethod of applying thisinvention to a four-wheeled autocar.

Like letters indicate like parts throughout the drawings.

The main frame of the car comprises side pieces A A and cross-bars A AA.

The engine B has in this case a vertical main shaft B, supported on thecross-bar A of the frame and carrying the driving-pulley 13 on its lowerend. The driven pulleys CC for fast and slow speeds, respectively, areplaced on the aide D of the road drivingwhecls. On the rear cross-bar.Afof the frame is a horizontal arm E, one end of which is pivoted onthe cross-bar by a pin E, while its free end is furnished with avertical pin E on which are carried two pulleys E E, free to rotate onsaid pin. The free end of the arm is also provided with a lug E to whichis pivotally attached one end of a connecting-rod F. The other end ofthe rod F is connected to one arm of a bell-crank lever G, pivoted ontothe side frame A, the other arm of which is pivoted to a toothed bar H.This toothed bar 11 is placed below and in front of the vehicle-seat, asshown in Fig. 2, so as to be conveniently manipulated by the occupant ofthe car, and is carried in a slotted lug or projection J, provided withteeth to engage the teeth of the bar. As shown in the figure, the bar IIis adapted to be worked by the foot. It is evident it maybe arranged foroperation by the hand and may be given a screw action instead ofratchet-teeth, as shown.

The driving-rope or power-transmitter K passes from the driving-pulley Bback to the idler-pulley E and in the arrangement shown in the drawingsit is then carried forward beneath a stationary idler L over the drivenpulley. C or C, from below which it passes back to the idler-pulley Eand thence back to the driving-pulley B By this arrangement a very longrope or equivalent is obtained.

By operating the bar H the power-transmitter can be tightened orslackened, as desired. By pressing down the lever the arm E by theaction of the bell-crank lever G and connecting-rod F is swung back,carrying with it the idlers E E and tightening the transmitter, andsince four runs of the rope are affected the amount of slack taken upwill be four times the length through which the arm has been swung. Byengaging the teethon the bar with the corresponding teeth in the slotthe arm and its pulleys are held in the desired position, while byreleasing the bar H the transmitter is at once slackened.

Although I prefer to use a rope or cable of circular cross-section, I donot bind myself to any special section, and it is evident that fiatropes or belts could be used with this method of driving.

What I claim as my invention, and desire to secure by Letters Patent, is

1. In transmission-gear for self-propelled vehicles, the combinationwith a driven pulley at one end of the vehicle, two idler-pul-.

pulleys.

2. In transmission-gear for self-propelled vehicles, the combinationwith an engine placed approximately in the longitudinal center of thevehicle, a driven shaft or part at one end of the vehicle, and twoidler-pulleys running in opposite directions and one or both of themadjustable at the other end of the vehicle, of a rope or equivalentpower-transmitter connecting these parts and having its separate runspassing around the respective idler-pulleys substantially as and for thepurpose described.

3. In transmission-gear for self-propelled vehicles, the combinationwith a driven pulley, two idler-pulleys adapted to be simultaneouslymoved toward or from the driven pulley, a driving-pulley arrangedintermediate the driven pulley and the idler-pulleys, and a rope passingaround the various pulleys in the manner set forth.

4. In transmission gear for self-propelled vehicles, the combinationwith a driven pulley, two idler-pulleys, an arm pivoted at one end, twoidler-pulleys carried by the opposite end of the arm, a rod connected atone end to the said arm, and an operating-lever connected with theopposite end of the rod, a driving-pulley, and a rope passing around theseveral pulleys as set forth.

In testimony whereof I have signed my name to this specification in thepresence of two subscribing witnesses.

WILLIAM BAINES.

